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Black_prince [1.1K]
2 years ago
11

Write a formula for the shaded regions help! How would I answer this?

Mathematics
1 answer:
lana66690 [7]2 years ago
7 0

Answer: a^2 pi + 2ab

Step-by-step explanation:

Since the figure is composed of a rectangle and two semicircles, we can calculate the area of the rectangle and the semicircles separately.

The two semicircles together make up the circle. 2a is given as the diameter of the circle, so therefore, the radius of the circle is a.

The area of a circle is pi*radius^2 = pi*a^2 = a^2 pi.

The area of a rectangle is the length * width, which is 2a*b in this case = 2ab

Therefore, the total area is a^2 pi + 2ab.

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A. 15 * (6 + 4) = (15 * ■) + (15 * 4)
jeka57 [31]

Answer:

A)6

B)x 2

C)x

Step-by-step explanation:

3 0
3 years ago
a shopkeeper sold a certain number ( a two-digit number)of toys all priced at a certain value (also a two-digit number when expr
Makovka662 [10]

The answer is 91 toys sold, make the number ab where a is the 10th digit and b is the first digit. The value is 10a + b that can expressed as 10 (3) + 4 = 34

Let the price of each item: xy

10x + y

He accidentally reversed the digits to: 10b + a toys sold at 10y + x rupees per toy. To get use the formula, he sold 10a + b toys but thought he sold 10b + a toys. The number of toys that he thought he left over was 72 items more than the actual amount of toys left over. So he sold 72 more toys than he thought:

10a + b =10b + a +72

9a = 9b + 72

a = b + 8

The only numbers that could work are a = 9 and b = 1 since a and b each have to be 1 digit numbers. He reversed the digits and thought he sold 19 toys. So the actual number of toys sold was 10a + b = 10 (9) + 1 = 91 toys sold. By checking, he sold 91 – 19 = 72 toys more than the amount that he though the sold. As a result, the number of toys he thought he left over was 72 more than the actual amount left over as was stated in the question.

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3 0
3 years ago
The slope-intercept form of the equation of a line that passes through point (-3, 8) is y = -2x + 6. What is the
matrenka [14]

Answer: y-8=-2(x+3)

Step-by-step explanation:

See attached image, it's direct formula substitution.

3 0
1 year ago
What is three-sevenths of sixty-three
Maksim231197 [3]
Hello there!

3/7 of 63 = 27


Hope I helped!

Let me know if you need anything else!

~Zoe
6 0
3 years ago
Read 2 more answers
I need help with this
elena-s [515]

Answer:

C

Step-by-step explanation:

Like terms mean same variable. it doesnt really matter if its negative in the front.

8 0
3 years ago
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